/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s12iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:57:54,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:57:54,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:57:54,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:57:54,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:57:54,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:57:55,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:57:55,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:57:55,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:57:55,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:57:55,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:57:55,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:57:55,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:57:55,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:57:55,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:57:55,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:57:55,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:57:55,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:57:55,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:57:55,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:57:55,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:57:55,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:57:55,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:57:55,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:57:55,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:57:55,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:57:55,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:57:55,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:57:55,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:57:55,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:57:55,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:57:55,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:57:55,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:57:55,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:57:55,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:57:55,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:57:55,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:57:55,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:57:55,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:57:55,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:57:55,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:57:55,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 03:57:55,105 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:57:55,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:57:55,106 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:57:55,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:57:55,107 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:57:55,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:57:55,107 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:57:55,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:57:55,107 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:57:55,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:57:55,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:57:55,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:57:55,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:57:55,110 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:57:55,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:57:55,110 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:57:55,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:57:55,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:57:55,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:57:55,111 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:57:55,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:57:55,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:57:55,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:57:55,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:57:55,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:57:55,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:57:55,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:57:55,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:57:55,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:57:55,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:57:55,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:57:55,437 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:57:55,441 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:57:55,442 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:57:55,443 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:57:55,443 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s12iff.c [2020-08-22 03:57:55,505 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae27ce898/e3ff23284af4445ea9449e7f137f09e9/FLAG024cd2d42 [2020-08-22 03:57:55,912 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:57:55,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s12iff.c [2020-08-22 03:57:55,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae27ce898/e3ff23284af4445ea9449e7f137f09e9/FLAG024cd2d42 [2020-08-22 03:57:56,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ae27ce898/e3ff23284af4445ea9449e7f137f09e9 [2020-08-22 03:57:56,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:57:56,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:57:56,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:57:56,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:57:56,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:57:56,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:57:56" (1/1) ... [2020-08-22 03:57:56,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f7beb14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:56, skipping insertion in model container [2020-08-22 03:57:56,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:57:56" (1/1) ... [2020-08-22 03:57:56,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:57:56,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:57:56,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:57:56,518 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:57:56,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:57:56,639 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:57:56,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:56 WrapperNode [2020-08-22 03:57:56,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:57:56,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:57:56,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:57:56,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:57:56,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:56" (1/1) ... [2020-08-22 03:57:56,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:56" (1/1) ... [2020-08-22 03:57:56,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:56" (1/1) ... [2020-08-22 03:57:56,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:56" (1/1) ... [2020-08-22 03:57:56,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:56" (1/1) ... [2020-08-22 03:57:56,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:56" (1/1) ... [2020-08-22 03:57:56,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:56" (1/1) ... [2020-08-22 03:57:56,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:57:56,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:57:56,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:57:56,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:57:56,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:57:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:57:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:57:56,742 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 03:57:56,742 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 03:57:56,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:57:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:57:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 03:57:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 03:57:56,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 03:57:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:57:56,744 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:57:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:57:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:57:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:57:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:57:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:57:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:57:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:57:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:57:57,001 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:57:57,002 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 03:57:57,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:57:57 BoogieIcfgContainer [2020-08-22 03:57:57,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:57:57,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:57:57,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:57:57,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:57:57,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:57:56" (1/3) ... [2020-08-22 03:57:57,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7912dce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:57:57, skipping insertion in model container [2020-08-22 03:57:57,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:57:56" (2/3) ... [2020-08-22 03:57:57,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7912dce0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:57:57, skipping insertion in model container [2020-08-22 03:57:57,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:57:57" (3/3) ... [2020-08-22 03:57:57,014 INFO L109 eAbstractionObserver]: Analyzing ICFG s12iff.c [2020-08-22 03:57:57,026 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:57:57,036 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:57:57,052 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:57:57,082 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:57:57,083 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:57:57,083 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:57:57,083 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:57:57,083 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:57:57,084 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:57:57,087 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:57:57,087 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:57:57,111 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-08-22 03:57:57,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 03:57:57,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:57:57,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:57:57,119 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:57:57,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:57:57,131 INFO L82 PathProgramCache]: Analyzing trace with hash 2033030480, now seen corresponding path program 1 times [2020-08-22 03:57:57,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:57:57,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60440722] [2020-08-22 03:57:57,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:57:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:57:57,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:57:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:57:57,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:57:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:57:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:57:57,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60440722] [2020-08-22 03:57:57,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:57:57,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:57:57,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778436178] [2020-08-22 03:57:57,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:57:57,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:57:57,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:57:57,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:57:57,396 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-08-22 03:57:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:57:57,513 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2020-08-22 03:57:57,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:57:57,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-22 03:57:57,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:57:57,524 INFO L225 Difference]: With dead ends: 62 [2020-08-22 03:57:57,524 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 03:57:57,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:57:57,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 03:57:57,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-22 03:57:57,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 03:57:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-08-22 03:57:57,570 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 23 [2020-08-22 03:57:57,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:57:57,571 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-08-22 03:57:57,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:57:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-08-22 03:57:57,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 03:57:57,573 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:57:57,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:57:57,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:57:57,574 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:57:57,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:57:57,575 INFO L82 PathProgramCache]: Analyzing trace with hash 706992569, now seen corresponding path program 1 times [2020-08-22 03:57:57,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:57:57,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120461054] [2020-08-22 03:57:57,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:57:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:57:57,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:57:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:57:57,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:57:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:57:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:57:57,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120461054] [2020-08-22 03:57:57,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:57:57,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:57:57,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958631358] [2020-08-22 03:57:57,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:57:57,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:57:57,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:57:57,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:57:57,726 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2020-08-22 03:57:57,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:57:57,868 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2020-08-22 03:57:57,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 03:57:57,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-08-22 03:57:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:57:57,871 INFO L225 Difference]: With dead ends: 51 [2020-08-22 03:57:57,871 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 03:57:57,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:57:57,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 03:57:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-08-22 03:57:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 03:57:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-08-22 03:57:57,881 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2020-08-22 03:57:57,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:57:57,882 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-08-22 03:57:57,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:57:57,882 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-08-22 03:57:57,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 03:57:57,883 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:57:57,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:57:57,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:57:57,884 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:57:57,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:57:57,885 INFO L82 PathProgramCache]: Analyzing trace with hash 284203188, now seen corresponding path program 1 times [2020-08-22 03:57:57,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:57:57,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221459930] [2020-08-22 03:57:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:57:57,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:57:57,934 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:57:57,934 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:57:57,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:57:57,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:57:57 BoogieIcfgContainer [2020-08-22 03:57:57,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:57:57,960 INFO L168 Benchmark]: Toolchain (without parser) took 1668.89 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.7 MB in the beginning and 104.3 MB in the end (delta: -632.1 kB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. [2020-08-22 03:57:57,961 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 03:57:57,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.77 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 182.9 MB in the end (delta: -79.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-22 03:57:57,963 INFO L168 Benchmark]: Boogie Preprocessor took 39.75 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 03:57:57,964 INFO L168 Benchmark]: RCFGBuilder took 325.26 ms. Allocated memory is still 203.9 MB. Free memory was 180.5 MB in the beginning and 161.8 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-08-22 03:57:57,964 INFO L168 Benchmark]: TraceAbstraction took 949.77 ms. Allocated memory is still 203.9 MB. Free memory was 161.8 MB in the beginning and 104.3 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. [2020-08-22 03:57:57,968 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 349.77 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 182.9 MB in the end (delta: -79.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.75 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 180.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 325.26 ms. Allocated memory is still 203.9 MB. Free memory was 180.5 MB in the beginning and 161.8 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 949.77 ms. Allocated memory is still 203.9 MB. Free memory was 161.8 MB in the beginning and 104.3 MB in the end (delta: 57.4 MB). Peak memory consumption was 57.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i